具有自动完成wxPython的ComboBox

时间:2018-06-21 23:12:33

标签: python user-interface wxpython wxwidgets

我想拥有一个具有自动完成功能的ComboBox,因为我有一个包含1000多个项目的列表,并且希望能够通过只包含部分项目字符串来选择一个元素而不必遍历整个列表。组合框。

我一直在环顾四周,并且该问题已被多次回答,我什至在这里检查了上一个问题的以下链接:

和其他链接:

但是,当我尝试运行示例代码时,总是出现错误:“模块'wx'没有属性'SimpleHtmlListBox'/'HtmlListBox'“。

该错误的原因可能是什么?还有其他实现自动完成组合框的方法吗?

1 个答案:

答案 0 :(得分:1)

我已经转换了您提供的第一个链接中的代码,以使其在python 3 wxPython Phoenix中工作。添加了一些更改以使组合框更好地工作。第一个comboBox已在Mac OSX中进行了测试。但是当我对其进行测试时,Linux gtk +无法正常工作,因此我在第二行中使用TextCtrl作为comboBox的筛选器来创建工作。

import wx

class PromptingComboBox(wx.ComboBox) :
    def __init__(self, parent, choices=[], style=0, **par):
        wx.ComboBox.__init__(self, parent, wx.ID_ANY, style=style|wx.CB_DROPDOWN, choices=choices, **par)
        self.choices = choices
        self.Bind(wx.EVT_TEXT, self.OnText)
        self.Bind(wx.EVT_KEY_DOWN, self.OnPress)
        self.ignoreEvtText = False
        self.deleteKey = False

    def OnPress(self, event):
        if event.GetKeyCode() == 8:
            self.deleteKey = True
        event.Skip()

    def OnText(self, event):
        currentText = event.GetString()
        if self.ignoreEvtText:
            self.ignoreEvtText = False
            return
        if self.deleteKey:
            self.deleteKey = False
            if self.preFound:
                currentText =  currentText[:-1]

        self.preFound = False
        for choice in self.choices :
            if choice.startswith(currentText):
                self.ignoreEvtText = True
                self.SetValue(choice)
                self.SetInsertionPoint(len(currentText))
                self.SetTextSelection(len(currentText), len(choice))
                self.preFound = True
                break

class TrialPanel(wx.Panel):
    def __init__(self, parent):
        wx.Panel.__init__(self, parent, wx.ID_ANY)

        choices = ['grandmother', 'grandfather', 'cousin', 'aunt', 'uncle', 'grandson', 'granddaughter']
        for relative in ['mother', 'father', 'sister', 'brother', 'daughter', 'son']:
            choices.extend(self.derivedRelatives(relative))
        self.choices = choices = sorted(choices)

        mainSizer = wx.FlexGridSizer(2, 2, 5, 10)
        self.SetSizer(mainSizer)

        mainSizer.Add(wx.StaticText(
            self, -1, "Worked in Mac - python 3 - wx phoenix"))
        cb1 = PromptingComboBox(self, choices=choices)
        mainSizer.Add(cb1)

        mainSizer.Add(wx.StaticText(self, -1, "Work arround in Linux-gtk"))
        sizer2 = wx.BoxSizer(wx.HORIZONTAL)
        mainSizer.Add(sizer2)
        filterCtrl = wx.TextCtrl(self, -1, size=(150, -1))
        filterCtrl.Bind(wx.EVT_TEXT, self.OnFilter)
        sizer2.Add(filterCtrl)
        self.cb2 = wx.ComboBox(self, -1, size=(150, -1), choices=choices)
        sizer2.Add(self.cb2)


    def derivedRelatives(self, relative):
        return [relative, 'step' + relative, relative + '-in-law']

    def OnFilter(self, event):
        currentText = event.GetString().upper()
        tmpChoices = [c for c in self.choices if c.startswith(currentText)]
        if tmpChoices != []:
            self.cb2.SetItems(tmpChoices)
            self.cb2.SetValue(tmpChoices[0])
        else:
            self.cb2.SetValue('')
            self.cb2.SetItems([])

if __name__ == '__main__':
    app = wx.App(False)
    frame = wx.Frame (None, -1, 'Demo PromptingComboBox Control and Work around',
                      size=(700, 400))
    TrialPanel(frame)
    frame.Show()
    app.MainLoop()